Study of the influence of direct laser deposition parameters on the structure and properties of high-strength 08Kh14NDL stainless steel

A series of samples were manufactured using the additive technology of direct laser deposition (DLD) from 08Kh14NDL steel powder at different process parameters (radiation power, scanning speed and powder feed rate). The macroand microstructure, density and hardness of the samples were studied. The structural features of the steel manufactured by DLD were studied in comparison with casting, non-metallic inclusions were identified, and the size of the structural components was determined. It was shown that the structure, density and hardness of the steel can be varied by changing the DLD modes, which is promising for the development of industrial additive technologies.

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